@misc{indiciae0d198d11c546,
  title = {USGS Reference Materials Program: Serving the Needs of the Global Analytical Community},
  author = {Ruth E. Wolf and Stephen A. Wilson},
  year = {2007},
  doi = {10.3133/fs20073056},
  url = {https://pubs.usgs.gov/publication/fs20073056},
  note = {Source identifier: fs20073056}
}